Many people traverse the 15 freeway, on their way to and from the high desert, or to Las Vegas. I wonder if they ever give a thought to the world that lies beyond the concrete ribbon that runs through the desert.

I use my DJI Phantom 4 (https://www.dji.com/phantom-4) and my Jeep to explore that world.
The image below was taken in November, 2017, near Hwy 138. Railroad tracks, used by freight trains, can be seen in the background. Vehicles can be seen on the 15 freeway in the distance.